Engineering On-Surface Spin Crossover Spin-State Switching in a Self-Assembled Film of Vacuum-Sublimable Functional Molecule

Engineering On-Surface Spin Crossover : Spin-State Switching in a Self-Assembled Film of Vacuum-Sublimable Functional Molecule

© 2018 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

Bibliographische Detailangaben
Veröffentlicht in:Advanced materials (Deerfield Beach, Fla.). - 1998. - 30(2018), 11 vom: 12. März
1. Verfasser: Kumar, Kuppusamy Senthil (VerfasserIn)
Weitere Verfasser: Studniarek, Michał, Heinrich, Benoît, Arabski, Jacek, Schmerber, Guy, Bowen, Martin, Boukari, Samy, Beaurepaire, Eric, Dreiser, Jan, Ruben, Mario
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2018
Zugriff auf das übergeordnete Werk:Advanced materials (Deerfield Beach, Fla.)
Schlagworte:Journal Article functional spin crossover complexes molecular electronics/spintronics on-surface switching self-assembly thin films
Beschreibung
Zusammenfassung:© 2018 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
The realization of spin-crossover (SCO)-based applications requires study of the spin-state switching characteristics of SCO complex molecules within nanostructured environments, especially on surfaces. Except for a very few cases, the SCO of a surface-bound thin molecular film is either quenched or heavily altered due to: (i) molecule-surface interactions and (ii) differing intermolecular interactions in films relative to the bulk. By fabricating SCO complexes on a weakly interacting surface, the interfacial quenching problem is tackled. However, engineering intermolecular interactions in thin SCO active films is rather difficult. Here, a molecular self-assembly strategy is proposed to fabricate thin spin-switchable surface-bound films with programmable intermolecular interactions. Molecular engineering of the parent complex system [Fe(H2 B(pz)2 )2 (bpy)] (pz = pyrazole, bpy = 2,2'-bipyridine) with a dodecyl (C12 ) alkyl chain yields a classical amphiphile-like functional and vacuum-sublimable charge-neutral FeII complex, [Fe(H2 B(pz)2 )2 (C12 -bpy)] (C12 -bpy = dodecyl[2,2'-bipyridine]-5-carboxylate). Both the bulk powder and 10 nm thin films sublimed onto either quartz glass or SiOx surfaces of the complex show comparable spin-state switching characteristics mediated by similar lamellar bilayer like self-assembly/molecular interactions. This unprecedented observation augurs well for the development of SCO-based applications, especially in molecular spintronics
Beschreibung:Date Completed 01.08.2018
Date Revised 30.09.2020
published: Print-Electronic
Citation Status PubMed-not-MEDLINE
ISSN:1521-4095
DOI:10.1002/adma.201705416